科研之友
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摘要
Interaction between cucurbit[6]uril (Q[6]) and the guest 1-hexyl-4-(4-pyridyl)pyridinium bromide (HV+) has been investigated by H-1 NMR spectroscopy, mass spectrometry, isothermal titration calorimetry, and single-crystal X-ray diffraction analysis. Experimental results have shown that the host Q[6]) preferentially encapsulates the hexyl moiety of the 1-hexyl-4-(4-pyridyl)pyridinium bromide guest in its hydrophobic cavity to form a 1:1 inclusion complex, both in aqueous solution and in the solid state. This inclusion complex is stabilized through an interplay of hydrogen-bonding and ion-dipole interactions.
